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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
18185 Give Away   34 1361 22.49
20
19
7208 Black or White   58 1482 42.45
16
19
503 Prime Intervals   67 1827 16.14
21
19
57 Supernumbers in a permutation   22 1110 33.01
17
19
1702 Cleaning Robot   45 1593 34.22
27
19
2728 Breaking in   8 304 26.79
30
19
11443 Davids Greed   3 253 26.22
28
19
15655 Product of factorials   20 1346 23.50
19
19
18468 A Pleasant Stroll   10 138 35.42
23
19
22329 Chicks   8 98 38.70
19
19
24032 The art of tree numbers   18 148 29.10
17
19
26345 PATHETIC STRINGS   7 75 26.25
19
19
34812 Kth Power Summation   6 61 16.64
25
19
36199 Subset with all Digits   18 246 33.86
16
19
4206 Fast Maximum Matching   33 2094 29.48
22
19
4235 Wandering Queen   26 869 14.98
24
19
5732 Paradox   43 1241 27.87
16
19
11401 Bazinga!   18 745 22.65
18
19
23938 Save the Scofield !!   17 274 32.04
17
19
27321 Increasing numbers   17 588 23.87
13
19
7258 Lexicographical Substring Search   32 2296 22.75
23
19
2006 Load Balancing   19 1910 47.55
11
19
4226 Japan   30 1803 23.39
16
19
7019 Zig-Zag rabbit   5 596 36.47
22
19
27317 Number of score sequences   8 84 48.54
14
19
27369 Gupta ji Birthday !!   9 128 32.68
19
19
28451 Ada and Cities   11 154 30.51
21
19
30347 Runner Game   5 261 31.22
6
19
10790 G-One Numbers   38 2554 47.55
17
19
6288 Treeramids   16 1096 51.97
21
19
32946 Ada and Branches   19 346 36.32
18
19
11840 Sum of Squares with Segment Tree   55 2087 51.04
23
19
264 Corporative Network   14 612 25.41
17
19
3724 Rainbow Ride   9 497 36.16
19
19
6043 The Game   13 944 39.60
3
19
12005 Grass Planting   11 613 45.42
29
19
10111 Nonnegative Partial Sums   15 534 30.05
19
19
12563 Halt The War   8 401 29.64
19
19
13367 EVEN COUNT   8 352 23.15
28
19
25158 Star   15 314 34.60
12
19
34020 Ada and Pet   29 655 26.99
13
19
28307 Ada and Game   54 630 31.59
14
19
1811 Longest Common Substring   37 3532 22.38
20
19
43 Copying Books   45 2849 25.81
19
19
666 Con-Junctions   32 1006 40.93
14
19
9387 Special String   11 1113 39.63
6
19
13805 X-MEN   16 923 27.85
17
19
5972 Maximum Sum Sequences   14 1160 20.64
15
18
9650 Mega Inversions   12 617 42.94
11
18
48 Glass Beads   29 3477 38.08
15
18

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